Polarized relay



June 1 1926. 586,855

M B I'STAZAK POLARIZED RELAY Filed Jan. 26, 1921 u-mu-u...

H 7 2 2': a: 5Z5 1% y of my invention, andin which like referencePatented June 1, 1926.

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MICHAEL B. STAZAK, OF CHICAGO, ILLINOIS, ASSIGNOR TO KELLOGG SWITCHBOARDAND SUPPLY COMPANY, OF CHICAGO, ILLINQIS,-,A CORBQRATION OF ILLINOIS.

POLARIZED RELAY.

Application filed January 26, 1921. Serial 1 \To. 439,900.

an object of my invention is to provide an improved device of theclassdescr bed wh ch will embody desirable features and advantages, all masimple, efficient and economical' manner.

In a relay of the above type, the means for adjusting the space orair-gap between the armature and the ends of the magnet cores isoften'mounted in such a way that it is inaccessible from the front ofthe relay and it is necessary to provide a special tool for use when ,anad ustment is necessary, besides which time is lost due to thedifficulty inapplying the special tool. to said ad} just-able means;

To overcome these ,ob-1ect1onable features, I provide an aduistablemeans which has adjustable. screws :t'or adjusting the air-- gap, andImount-said adjustable means on one of the legs of the permanent magnetin sucha way. as to permit accesst-o'the said means from the front andwith theaid of an ordinary screw-driver or similar tool an accuratliildjustment maybe made in a very short-time.

Another feature .of,.my,invent-ion is this,

that the said adjustable, means may be removed from the relay byunscrewing the permanent magnet from the relay without removing theentire .relayfrom its mounting plate. i

Theabove features ,OIdfly invention,- as

describechand tor-a more completeimtlerstanding of myinvent on,reference may be had to the accomp anying drawings, in which I haveillustrated a preferred embodiment characters in the. severalfviewsdenote like parts, and ,which Fig. 1 is a front elevationqof the relayof my invention; 1'

Fig. 2 is a top view of;the relay;

.3 is a sideflvi ew of the relay;

Fig. 4 is a vieivot' its otherside;

Fig.5 is a bottom view of the relay;

Fig. 6 is a perspectiveview of thetarrnature of the relay Fig. 7 is aperspective view of the combined, armature and adjustable contactsupporting member;

Fig. 8 is a perspective view of the clamping member which adjustablysupports,

a whole the armature supporting member an d arm'ature in operativeassociation with theelectromagnets of the relay.

Referring now in detail to my invention asillustrated', itcomprises apair of electromagnets 2 and 8 connected by a yoke 4 and secured theretoin any suitable manner.

The U- shaped permanent magnet 5 is secured to the yoke 4: by means ofascrew (3, and its free end or leg 7 extends over the armature and' inproximity thereto,for the customary purposes The said leg 7 also servesasa support for the clamping meniber GM, with which is adjustablyassociated the armature supporting member 9 to be hereafter described. i

A clamping member GM, as shown in Fig.

8, comprisesa plate 20 having-an angularly ,prmectmgear 21, lntegrallyformed therewithl To said plate 20 is secured a spring 22by means of therivets 23, the purpose of this spring to be hereinafter described. A

I 24; shaped to fit' tightly on the leg- 7 of the permanent magnet hissecured to the plate 20 by meanso'f machine screws 25 extending" throughsuitable openings in the plate 24 and having screw-threaded engage--merit withc suitable tapped orifices in the plate This arrangementsecurely clamps thetwo plates'QO and24 to the leg 7 of the permanentmagnet 5. An opening '27 is pro vided inplate 2%, PGTlllllltHlgilleprotrusion .well as others, W1ll be morefullyhereinafteradjustable;contact screws. 16 and 17, and

three terminals, 30, 31 and 32 are secured to the mounting member 9 byscrews same M 'saidlbracket 18 making contact connectionwith terminal31, and bracket 19 male; ing con tact connection with terminal 30 tillBracket 18 and terminal 31, and bracket 19 and tern'iinal 30 aresuitably insulated from the arn'iat-ure supporting member 9 and fromscrews 33 and 3%. Terminal 32 is likewise insulated from terminal 31 andscrews fin oblong slot- S is provided in the mounting n'icinbcr 9 forpermitting access to a screw which secures a contact spring to thearmature 8.

The innbine zl armature and adjustable contact supporting member 9 isdisposed between t e clamping member and the ends of let cores, whichbrings it into meat with the leaf spring tne projecting car 11 restingon the face 40 of the angular car 21 of the plate 20. The said armaturemounting member 9 is adjustably and securely held in its relation withthe leaf spring 22 by means of adjustable screws 4-] and extendingthrough suitable openings in the clamping member CM, and havinscrew-threaded engagement with suitabi y tapped orifices in the armaturemounting member 9. The leaf spring 22 serves to keep a continual pull onthe adjustable screws ail and 422, thus preventing them from turningwithout the aid of an outside agent.

To increase or decrease the space or airgap between the armature 8 andthe ends of the eectromagnet cores, all that is necessary is to turn thescrews ll and 42 in clockwise or counter-clockwise direction, dependingon the width of the air-gap desired. If one of the air-gaps is desiredto be decreased, one will turn the corresponding screw inacounter-clockwise direction, and the move ment of the said screw willmove the armature supporting member 9 away from the clamping member CMand bring the armature 8 closer to the end of the magnet core, thusdecreasing the air-gap. If the air-gap is to be increased, turn the saidadjustable screw in a clockwise direction, which will move the armaturesupporting member 9 closer to the clamping member CM, thus moving thearmature 8 away from the end of the magnet core and increasing theair-gap.

The movement of one of the said screws does not, however, produce anychange in the air-gap controlled by the other, and should this air-gapbe in need of adjustment the corresponding screw must be operated beforedescribed, it being observed that when either adjusting screw is turnedthe arn'iature supporting member 9 tilts on the other screw as a pivotalpoint.

The armature 8 of the polarized relay is held in a biased position bymeans of an ad iustable tension spring et, one end of which uz'es a hooka?) secured to the armature S, and the other end of said spring isconnected to an adjustable arm 46 having a tapped orifice for receivingthe threaded pc on 4;? ol the rod 438, said rod l8 being rotatahlysupported by a suitable bracket lf), which is in turn secured to theyoke l by screws. For a more detailed description and understanding oithe means for adjusting the biased tension spring la, reference may behad to pending application Serial No. 350,804i. tiled by Charlestiparli's, January 12, 1.920.

A terminal plate 50 oft insulating material is provided which carries aplurality oi? terminals 51 suitably secured thereto, part ol' which.serve for connecting external conductors to the energizing wind', oi therelay, while others scrvi for connecting external conductors with wiresleading from the terminals 30, 31 and The terminal also connectec to thecontact spring, secured to the armature 8 in the usual and well-knownmanner, and for the usual purposes. A. clamping plate holds the terminalplate 50 between the spacer washers 53 and itself by means of the screws5+ which pass through openings in the plate 532 and washers 5 -3 andhave SCH \b-illllQtitlCtl engagement with tapped orifices in the yokeThe plate 52 has openings 55 through which the tern'iinals 51 project.An enclosing cover or shell 57 is provided which is slipped over therelay and held in place by neans of a nut A stud 29 which is secured tothe leg 7 of the U-shaped iermanent magnet 5 extends through a suitableopening in the bottom of the cover 57 and has screwthreaded engagementwith the nut 58, thereby securing the said cover 57 in place, enclosingthe relay. Bolts 56 are secured to the clamping plate 52 and form meanswhereby the relay and its enclosing shell 57, as a whole, are mounted ona supporting strip in the usual manner.

I desire not to be limited to the precise structures shown anddescribed, but shall claim my invention in a general manner, intendingto so word it as to include modifications within the scope of theinvention.

hat I claim as new and desire to secure by United States Letters Patent,is:

1. An adjustable mechanism comprising a U-shaped magnet to which issecured a clamping member having a leaf spring socured thereto, acontact and armature supporting member adjustably associated with saidclamping member by means of said leaf spring, and adjustable screwsextending through said clamping member and engaging tapped orifices insaid contact and armature supporting member, said contact and ar naturesupporting member moving to or away from said clamping member when thesaid adjustable screws are rotated.

2. An adjustable mechanism comprising a U-shaped magnet associated witha pair of electromagnet coils, a member having a leaf spring fastened toone leg of said U-shaped magnet, a carrier supporting an armature andadjustably associated with said member by means oi said leaf spring andby adjustable screws and thereby interposed and floated between the endsof said electromagnet coils and said member, the space between each endof said armature and its associated coil being independently regulatedand adjusted by rotating the said adjustable screws.

3. An electromagnet having an armature pivotally supported on a carrier,a permanent magnet, said carrier being also piv otally supported on thepermanent magnet of said electromagnet, screw-threaded adjusting meansfor tilting said carrier and therefore said armature to and from saidmagnet, and terminals for said electromagnet secured to said carrier.

i. A tWocoil electromagnet having an armature pivoted at a pointintermediate of its cores upon a carrier pivotally supportedindependently of said cores at points one on either side of the pivotalarmature support by screw-threaded adjusting means, and ter ninals forsaid electromagnet secured to sait carrier.

5. An electromagnet including a pair of coils, an armature pivotallymounted intermediate of the coils and independently of said coils, apermanent magnet to polarize said armature and carrying it by clampingmeans including screw-threaded adjustable pivotal supports, one oneither side of the armature mounting, said armature mounting-adapted tobe moved to adjust the relation of the armature to the cores of the electromagnets.

6. A two-coil polarized electron'iagnet having an armature pivotedbetween its cores, and micrometrically adjustable means for changing theair gap between said armature and either core independently of the airgap at the other core, said means comprising a carrier for said armatureand screw-threaded devices for changing the position of either end ofsaid carrier independently of its other end, and supporting means forsupporting said carrier relative to said cores, said supporting meansbeing clamped to the permanent magnet of said polarized electromagnet.

7. A polarized electromagnet having an armature, means for maintainingthe armature in a biased condition, micrometer adjusting means for eachend thereof, means for pivotally supporting said armature independentlyof the cores of said electromaget, other means for supporting saidsecond means relative to -the cores of said electromagnet and foroperatively associating said adjusting means with said armaturesupporting means.

Signed by me at Chicago, in the county of Cook and State of Illinois,this 24 day of January, 1921.

MICHAEL B. STAZAK.

